Parenteral injection device



March 16, 1943.

J. E. B. SHAW PARENTERAL INJECTION DEVICE Filed Aug. 26, 1942 WHW, 1

Patented .Mari 16, 1943 UNITED sTA'iEs ,PATENT OFFICE y Y Y I 'IEGJTION DIIVICE John E. B. Shaw, Chicago, Ill.

, Application August 2s, 1942, serial No. 456,454

fici. ais-3i) ZCIaims.

My invention relates to` a container having a, solution tor a parenteral injection, and to a stopper and seal for the container.

Heretoi'ore ithas been customary to `provide a rubber plug for parenteral injection bottles which had to be pierced or fractured. This has resulted in ruining the plug so that it cannot be used more than once. During times of war or other periods of scarcity of v materials, this results in great waste. It is among the objects of my invention to provide a. plug that does not have to be pierced or fractured, and which may be used many times after appropriate cleaning and sterilization.

This is an invaluable saving of rubber.

Another objectds to provide a construction assuring a more positive seal, and without the need of metal or rubber washers and other extraneous parts.

My invention contemplates such further ob- Y jects, advantages and capabilities as will later more fully appear and which are inherently possessed by my invention. l

While I have shown in the accompanying drawing a preferred form of my'invention, yet I wish it understood that the same' is/susceptible of modification and change without departing from the spirit of my invention.

Referring to the drawing, Fig. 1 is aside elevational view of a parenteral injection bottle; Fig. 2 is a top planI view of my stopper; Fig. 3 is a detailed sectional lview of my stopper on the bottle with the cap in closed position; Fig. 4 is a detailed sectional view with the cap removed showing the opening of my stopper and Fig. 5 is a detailed sectional view of my stopper in open position on the bottle ready for use.

The embodiment selected to illustrate my invention comprises a container IU containing a sterile solution forparenteral injections, such as dextrose, glucose, sodium chloride or the like. Within the neck II of container I the lower portion I2 of a plug or stopper I3, preferably made of rubber, composition or the like, is-positioned by friction grip. Spaced openings I4 and I5 extend vertically through the lower portion I 2- ofA said plug I3, and in opening I4 is positioned the upper end of hollow air tube I6of glass or other suitable material. The tube I6 extends downwardlywithin container Ill, with its lower end above the bottom of the container.

Said stopper I3 has a iiange I1 which rests on the top 35 oi container Il). Said stopper I3 also has an upper portion I8 with a passage I 3 therein positioned to communicate with liquid flow opening I5, when said upper portion is in normal upstanding position.

Within said passage I9 of upper portion I8 of plug I3 and attached to or integral with the inner wall 20 thereof is a nu-b 2I. Said nub has an inwardly converging portion 22 and an outwardly diverging end portion 23.

Integral with'orattached to the opposite outerl l wall 24 of upper portion I8 of plug I3 is a protuberance 25 having an inwardly converging portion 26 and an outwardly diverging end portion 21.

In the laboratory after container III has received the desired liquidhplug I3 is positioned with its lower portion I2 within the neck II and ange I1 over the top 35 of container I0. Air inlet tube I6 is positioned with its upper portion in opening I4 in plug I3. The upper portion I8 of plug I3 is moved diagonally downwardly until nub 2I is within liquid ow opening I5, and protuberance 25 is within air supply opening I4. Openings I4 and I5 each have inwardly inclined portions 28 adapted to receive and to permit entry of said nub 2I and protuberance 25, and adapted to snugly engage their respective enlarged end portions 23 and 21 and prevent` accidental displacement.

In the above described-sealed position, the upper portion I8 of plug I3 extends substantially in a horizontal plane. A closure 29 has a downwardly extending peripheral ange 30 with screw threads 3| to engage the screw threads 32 on the outer portion of the neck, II of the container I3. This retains the plug I2 in place to form a perfect seal.

When the container is to be used for a parenteral injection, the hospital attendant removes the closure 29 and applies upward pressure to the upper portion I8 of the plug adjacent its mouth 33A as shown in Fig. 4. This moves protuberance 25 y .portion having a liquid outlet opening and an air inlet opening therethrough, said Stopper having an upper portion with a passage therethrough and communicating with said liquid outlet opening in said lower portion in normal upstanding position, said upper portion having a nub extending within said passage, and a protuberance on its opposite outer wall, said upper portion adapted to be moved diagonally downwardly so that said nub is engaged within and seals said liquid outlet opening, and said protuberance is engaged within and seals said air inlet opening, and a removable closure for retaining said stopper in closed sealing position, said upper portion adapted upon removal of said closure, to be moved diagonally upwardly toward upstanding position so that said nub and said protuberance are removed from said openings, said upper portion having a mouth adapted to receive in upstandingposition a tubing connected to an injection needle.

2. A stopper for a parenteral injection oontainer having a plug portion adapted to iit within the neck of said container by friction grip, said plug portion having a pair of spaced openings therethrough, said stopper having an upr portion extending above said plug portion, said upper portion having a pair of spaced knobs, said upper portion adapted to be moved diagonally downwardly so that said knobs engage within and seal said openings, said upper portion also adapted to be moved diagonally upwardly so that said knobs are removed from said openings, said upper portion in upstanding position having a passage therein communicating with one of said openings, said upper portion having a mouth adapted to receive a tubing connected to an injection needle.

JOHN E. B. SHAW. 

